Abstract
1. 4,4'-Dimethylcholesta-7,9,14-trienol is an intermediate in the metabolism of dihydroagnosterol to cholesterol by rat liver homogenate. 2. This triene is reduced by a rat liver microsomal preparation in the presence of NADPH to give 4,4'-dimethylcholesta-7,9-dienol under anaerobic conditions. 3. Reduction of the triene in the presence of [4-3H2]NADPH resulted in the incorporation of 3H into the product. 4. Under aerobic conditions the triene is converted into cholesterol by a rat liver homogenate.
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- Bloxham D. P., Wilton D. C., Akhtar M. Studies on the mechanism and regulation of C-4 demethylation in cholesterol biosynthesis. The role of adenosine 3':5'-cyclic monophosphate. Biochem J. 1971 Nov;125(2):625–634. doi: 10.1042/bj1250625. [DOI] [PMC free article] [PubMed] [Google Scholar]
- OLSON J. A., Jr, LINDBERG M., BLOCH K. On the demethylation of lanosterol to cholesterol. J Biol Chem. 1957 Jun;226(2):941–956. [PubMed] [Google Scholar]
- PUDLES J., BLOCH K. Conversion of 4-hydroxymethylene-Delta 7 cholesten-3-one to cholesterol. J Biol Chem. 1960 Dec;235:3417–3420. [PubMed] [Google Scholar]
- Rahimtula A. D., Wilton D. C., Akhtar M. The conversion of steroid 7,9-dienes into cholesterol. Biochem J. 1969 May;112(4):545–546. doi: 10.1042/bj1120545. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tavares I. A., Munday K. A., Wilton D. C. The pathway for the conversion of dihydroagnosterol into cholesterol in rat liver. Biochem J. 1977 Jul 15;166(1):11–15. doi: 10.1042/bj1660011. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wilton D. C., Munday K. A., Skinner S. J., Akhtar M. The biological conversion of 7-dehydrocholesterol into cholesterol and comments on the reduction of double bonds. Biochem J. 1968 Feb;106(4):803–810. doi: 10.1042/bj1060803. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wilton D. C., Watkinson I. A., Akhtar M. The stereochemistry of hydrogen transfer from reduced nicotinamide-adenine dinucleotide phosphate in the reduction of ethylenic linkages during cholesterol biosynthesis. Biochem J. 1970 Oct;119(4):673–675. doi: 10.1042/bj1190673. [DOI] [PMC free article] [PubMed] [Google Scholar]